JPH10142559A - Production of resin spectacle member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily produce resin spectacle members which have high ornamentality and are excellent in terms of fitting property, etc. SOLUTION: Rugged parts 17 are formed at the edges of member bodies 3 used for producing front frame members 1. The parts of the member bodies 3 where the rugged parts 17 are formed are housed into closed metal molds. A resin material in a molten state having the melting temp. lower than the heat resistant temp. of the resin constituting the member bodies is injected into the metal molds. The cured matter 22 of the resin material is integrated in tight contact with the rugged parts 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a front frame member made of resin and eyeglass members such as temples, moderns and pads. More specifically, the present invention relates to a method for producing a resin eyeglass member which is rich in decorative effects or excellent in functional properties such as fit.

[0002]

2. Description of the Related Art As a general example of a conventional resin-coated temple, as shown in FIG. 10, a core metal a is made of a resin coating material except for a front end portion c where a hinge b is attached. d, and this coating material was formed in a series using one kind of resin material. The manufacturing procedure is performed, for example, by inserting a shaft portion f of the core metal a excluding a front end portion into the insertion hole e of the resin coating material d provided with the insertion hole e in the axial direction. I was Alternatively, the shaft portion f of the core metal a is pushed into the resin coating material d which has been heated to a required temperature and is in a softened state in the length direction thereof.

As another mode of the resin-coated temple, as shown in FIG. 11, a metal flange g is provided at an intermediate position of a metal core a, and the metal flange g is independently provided on the front and rear portions of the flange g. There has also been proposed one in which different types of resin coating portions h and i are formed by injection molding. As described above, the reason that the different resin coating portions h and i are formed with the flange portion g interposed therebetween is that even if an attempt is made to directly connect another resin coating portion to the cured resin coating portion by injection molding, the connection is made. The strength may be weak,
Also, it was thought that it would be aesthetically unnatural.

[0004] Other aspects of the resin-coated temple include:
As shown in FIG. 12, the ear hanging part j of the cored bar a was covered with a resin coating material (modern) k.

[0005]

However, the conventional resin-coated temple has the following problems. The type shown in FIGS. 10 and 12 is, in appearance, a combination of a metal and a resin, which is composed of a front end portion of a metal core and a resin portion, and the type shown in FIG. The resin coating portions h and i are formed so as to sandwich the flange portion g provided on the cored bar. The design effect is that the different material portions are formed by a linear boundary m (FIGS. 10 to 11) or a step n.
(FIG. 12).
It was simple with little interrelation.

In the type shown in FIG. 11 in which resin coating portions h and i are formed before and after a flange portion g disposed in the middle of a metal core, the resin coating portion i on the rear side is made of a relatively flexible resin material. Although it was formed to improve the fit of the ear hooks, it was difficult to expect good fit because the core was also embedded in the ear hooks. Was.

The present invention has been developed in view of the above-mentioned conventional problems, and has as its object to provide a method of manufacturing a resin spectacle member which is rich in decorative effects or has excellent functional properties such as fit. It is.

[0008]

In order to solve the above-mentioned problems, the present invention employs the following means. That is, the method for manufacturing the resin eyeglass member according to the present invention (hereinafter referred to as the manufacturing method)
A manufacturing method for manufacturing a resin eyeglass member, wherein after manufacturing a resin member main body having an uneven portion formed at an edge portion, at least a portion of the member main body where the uneven portion is formed is closed. It is housed in a mold, and then a molten resin material having a melting temperature lower than the heat resistance temperature of the resin constituting the member main body is injected into the mold, and a cured product of the resin material is formed into the uneven portion. It is characterized by being integrated into a close contact state.

In the above manufacturing method, the member main body is preferably formed by cutting a sheet member made of a hard resin. Further, it is preferable that the uneven portion is formed as having a concave portion formed at an edge portion of the member main body.

[0010] In a more preferred aspect of the manufacturing method according to the present invention, the member main body is provided with an uneven portion at an edge portion thereof, which is open at both ends continuous in the thickness direction of the member main body and has a groove extending inside the member main body. It is assumed that the part is formed, and at least the part of the member main body where the concave and convex portions are formed is housed in a closed mold, and then has a melting temperature lower than the heat resistant temperature of the resin constituting the member main body. The molten resin material is injected into a mold, the injected resin material is allowed to flow into the groove portion closely, and a cured product of the resin material is integrated with the uneven portion in a tightly contacted state. Things.

A more specific embodiment of the manufacturing method according to the present invention is a manufacturing method for manufacturing a spectacle member as a front frame member made of a resin, and the main body of the member used for manufacturing the front frame member includes left and right lenses. The holding frames are connected by bridges, pads are provided on the rear side of the inner parts of both lens holding frames, and temple connecting parts are connected to the outer parts of the left and right lens holding frames. At least the two lens holding frames and the bridge of the member body are manufactured by cutting a hard resin sheet member. And
The member main body is formed at the upper and lower edge portions of the temple connection portion, and is formed with a concave and convex portion having a groove portion which is open at both ends continuous in the thickness direction of the member main body and extends inside the member main body, The portion of the member main body having the above-described configuration, on which the uneven portion is formed, is housed in a closed mold. Thereafter, a molten resin material having a melting temperature lower than the heat-resistant temperature of the resin constituting the member main body is injected into a mold, and a cured product of the resin material is allowed to flow into the groove portion in a tight manner, thereby forming the resin material. The upper and lower edge portions and the outer edge portion of the temple connection portion are successively covered with the cured material of the resin material by this injection molding. It is characterized by having been done.

[0012] In the above-mentioned manufacturing method, an uneven portion which is open at both ends continuous in the thickness direction of the member main body and has a groove extending inside the member main body is formed on the upper edge portion and / or the lower edge portion of the bridge. The portion where the uneven portion is formed is housed in a closed mold, and thereafter, a molten resin material having a melting temperature lower than the heat resistant temperature of the resin constituting the member main body is formed of gold. In some cases, the resin material is injected into a mold, and the cured product of the resin material is integrated with the uneven portion in a tightly contacted state.

[0013] In addition, the rear edge portion of the pad which is in contact with the nose bridge surface has a concave and convex portion which is open at both ends continuous in the thickness direction of the member main body and has a groove extending inside the member main body. It is assumed that the resin material in the molten state having a melting temperature lower than the heat-resistant temperature of the resin constituting the member main body is housed in a closed mold, and the portion where the uneven portion is formed is then housed in a closed mold. In some cases, the resin material is injected into a mold, and the cured product of the resin material is integrated with the concave and convex portions in a tight contact state.

A more specific embodiment of the manufacturing method according to the present invention is a manufacturing method for manufacturing a spectacle member as a temple made of resin, and a member main body used for manufacturing the temple includes:
It has an ear hook portion on the rear end side, and is entirely manufactured by cutting a hard resin sheet member. And, in the main body of the member, the upper and lower edge portions of the ear hook portion are formed with concave and convex portions which are open at both ends continuous in the thickness direction of the main body of the member and have grooves extending inside the main body of the member. And, of the member body having the above configuration, the portion where the concave and convex portions are formed is accommodated in a closed mold, and thereafter, in a molten state having a melting temperature lower than the heat-resistant temperature of the resin constituting the member body. A resin material is injected into a mold, and a cured product of the resin material is allowed to flow into the groove portion to integrate the cured product of the resin material into a tight contact with the concave and convex portions. The upper and lower edge portions and the outer edge portion of the ear hook portion are successively covered with a cured product of the resin material.

In the above-mentioned manufacturing method, at the front end side of the member main body, the upper and lower edge portions are open and closed at both ends in the thickness direction of the member main body, and have a groove portion extending inside the member main body. Is formed, and the portion of the member main body having the above configuration, in which the concave and convex portions are formed, is housed in a closed mold, and then the melting temperature is lower than the heat resistant temperature of the resin forming the member main body. Inject the molten resin material having the above into the mold, and let the cured product of the resin material flow into the groove portion closely to integrate the cured material of the resin material into the tight contact with the uneven portion. By this injection molding, it is preferable that the upper and lower edge portions of the front end portion and the outer edge portion are successively covered with the cured resin material.

In each of the above-mentioned manufacturing methods, it is preferable to use a sheet made of hard resin made of acetate.

In each of the above-described manufacturing methods, the member main body has a decorative through hole and / or a decorative concave portion penetrating therethrough, and the molten resin injected into a closed mold is filled with the decorative resin. It is also preferable to fill holes and decorative recesses.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The manufacturing method according to the present invention is applied to manufacture a resin front frame member 1 shown in FIG. 1 and a resin temple 2 shown in FIG. The front frame member 1
Is manufactured by using a member main body 3 shown in FIG. 3 which is entirely made of a synthetic resin, and the temple 2 is made of a whole made of a synthetic resin. It is manufactured using the member body 5 shown in FIG.

The main body 3 of the front frame member 1 is connected to the left and right lens holding frames 6 and 6 by a bridge 7 and has a pad 9 on the rear side of the inner portion of the two lens holding frames 6 and 6. , 9 are integrally provided. Outside the left and right lens holding frames 6 and 6, temple connection portions 10 and
10 are connected in series.

At least the two lens holding frames 6 and 6 and the bridge 7 of the member main body are manufactured by cutting a hard resin sheet member (such as acetate).
The pads 9, 9 are attached later by means such as adhesion or welding. The temple connecting portion 1 of the member body 3 having the above-described configuration.
The upper and lower edge portions 11 and 12 of the pad 9 and the upper edge portion of the bridge 7 (the upper and lower edge portions may be provided, but only the upper edge portion in FIG. 3) 13 and the rear edge portion 15 of the pad 9
The groove 1 is formed by performing a complicated arabesque engraving using a laser machine or an engraving machine, and having both ends open in the thickness direction of the member main body and extending inside the member main body.
It is assumed that the concavo-convex portion 17 having the shape 6 is formed.

The member body 5 constituting the temple 2
Has an ear hooking portion 18 on the rear end side, and is entirely manufactured by cutting a hard resin sheet member (such as acetate). The ear hook 18 of the member body 5
The upper and lower edge portions 19 and 20 at the front and rear end portions of the member are subjected to a complex arabesque sculpture, and are open at both ends continuous in the thickness direction of the member body. An uneven portion 17 having a groove 16 extending inside is formed.

In the present embodiment, the temple connecting portions 10 and 10 of the member body 3 forming the front frame member and the front and rear portions of the member body 5 forming the temple are respectively provided. The decorative through-hole 21 is formed so as to penetrate the member body.

The decorated front frame member 1 and temple 2
Is manufactured by subjecting the member bodies 3 and 5 to injection molding. This injection molding is performed using a resin material different from the resin material forming the member main bodies 3 and 5, and the cured product 22 of the resin material obtained by the injection molding is integrated with the uneven portion 17 in a tightly contacted state. The specific points are as follows.

That is, the member main bodies 3 and 5 having the above-described configuration.
After the portion 18 having the uneven portion 17 formed therein is accommodated in a mold cavity 24 in a closed mold 23 as shown in FIG.
A molten resin material (for example, acetate) having a melting temperature lower than the heat resistance temperature of the resin constituting the member main body (having a temperature difference of about 30 ° C. to 50 ° C.) is injected into a mold. A cured resin material (blackened in FIGS. 1 and 2) 22 is integrated with the uneven portion 17 in a close contact state. In the present embodiment, since the decorative through-hole 21 is provided as described above, the through-hole 21 is also filled with a resin material by the injection molding, and a cured product thereof (FIGS. 1-2). 22) are integrated with the through-hole 21 in close contact.

As described above, since the hardened material 21 is densely filled in the complicated intricate groove 16, the member body 3
And there is no danger of separation.

As shown in FIG. 1, the temple connecting portions 10, 10 of the front frame member 1 have outer edge portions 25 (FIG. 3) and upper and lower edge portions 11, 12 (FIG. 3). ) Is arranged around the cured product 22. In the bridge 7, the cured product 2 is arranged along the upper edge portion 13.
2 are arranged, and in the pads 9, 9,
A hardened material 22 is disposed at a contact portion with the nose bridge surface.

As shown in FIG. 2, in the front portion of the temple 2, a hardened material 22 is arranged so as to surround the upper and lower edge portions 19 and 20 and the front edge portion 26. In the rear portion of the temple, the cured product 22 is arranged so as to surround the upper and lower edge portions 19 and 20 (FIG. 4) and the rear edge portion 27 (FIG. 4).

In these cases, the hardened material 22a provided on the rear end of the temple 2 and the hardened material 22 provided on the pads 9, 9 are provided.
By selecting a soft resin material as b and 22b,
The contact with the temporal part, the base of the ear, and the nose bridge surface in the state of wearing glasses becomes soft. Further, as the injection molding resin material constituting the temple front end portion serving as the hinge attachment portion, it is preferable to employ a material that forms a hardened material 22c having high hardness.

[Other Embodiments] When the main body of the temple is divided into a front part and a rear part, the concave and convex parts provided on the main part of the temple may be provided only on the rear end face of the front part or on the rear part. May be provided only on the front end face. In addition, as shown in FIGS. 3 and 4, the concavo-convex portion may not be formed as a groove portion having both ends open in the thickness direction of the member body, but may be formed as a concave portion at an edge portion of the member body.

The temple shown in the above embodiment is
Although it is formed as having no core bar as in the conventional resin-coated temple, the core bar may be embedded similarly to the conventional temple.

As described above, the member main body is preferably formed by cutting a sheet member made of a hard resin. However, if the member main body has heat resistance that can withstand re-injection molding, it is formed by injection molding. May be used. In this case, the uneven portion may be formed simultaneously with the injection molding.

The present invention can also be applied to the manufacture of a pad 9 that is swingably attached to an arm.
Is a sectional view thereof. First, as shown in FIG. 7, an uneven portion 17 having a groove 16 extending into the inside of the member main body is formed in a peripheral portion of the member main body 29, and after the member main body 29 is accommodated in a closing mold, A resin material in a molten state having a melting temperature lower than the heat-resistant temperature of the resin constituting the main body is injected into a mold, and a cured product 22 of the resin material is brought into close contact with the uneven portion 17 as shown in FIG. Integrate into a state.

The present invention can also be applied to modern manufacturing, and FIG. 8 is a cross-sectional view of a used state with the core 30 inserted. An uneven portion 1 having a groove 16 extending inside the member main body at a rear edge portion of the member main body 31 shown in FIG.
After forming the member main body 31 in the closed mold, a molten resin material having a melting temperature lower than the heat resistant temperature of the resin constituting the member main body is injected into the mold. As shown in FIG. 8, the cured product 22 of the resin material is integrated with the uneven portion 17 so as to be in close contact therewith.

The member main body may be provided with a decorative recess instead of the decorative through hole, and may be provided with both the decorative through hole and the decorative recess. These are filled with a cured product of a resin material by injection molding.

[0035]

The present invention has the following excellent effects. According to the manufacturing method of the present invention, since the injection molding is performed using the member main body having the uneven portions formed thereon, the cured product of the resin material obtained by the injection molding can be tightly integrated with the uneven portions. The main body and the cured product can be made inseparable.

Further, since the member main body and the cured product of the resin material can be integrated in a state where they are intricately entangled with each other according to the form of the uneven portion, the uneven portion is emphasized while reinforcing the uneven portion. As a result, it is possible to impart a complicated decoration having a great design effect to the resin eyeglass member.

More specifically, in the conventional resin-coated temple shown in FIG. 11, the front and rear resin-coated portions are cut off by the flange portion, and the resin portions are poorly related to each other in design. However, according to the present invention, even when the core is inserted into the temple, there is no intervening collar portion, so that the front and rear resin coating portions are not interconnected. Thus, it is possible to manufacture a high-value-added spectacle member having a rich decorative effect. As described above, according to the present invention, a complicated decoration can be applied while effectively reinforcing the portion provided with the concave and convex portions.

The uneven portion may be formed only on a part of the edge portion of the member main body, and the cured product of the resin material formed by injection molding may be disposed only on that portion. In the case where the uneven portion is formed at the edge portion or the upper and lower edge portions and the edge portion on the outer end side, the cured material of the resin material can be arranged so as to surround the entire end side of the member main body. By adopting such a surrounding arrangement, it is possible to improve the connection strength between the cured product and the member main body and to strongly impress the series of the both in terms of the design effect, which is preferable.

In particular, when the decorative through-hole and the decorative concave portion are formed in the member main body, the through-hole and the concave portion can be filled with the cured product of the resin material, thereby further improving the decorative effect. sell.

In particular, when the member main body is formed by cutting a hard resin sheet member having a colored pattern on the surface and inside, the member body is formed by the colored pattern of the member main body.
A delicate pattern that cannot be obtained by injection molding can be represented on the eyeglass member. In addition, by using appropriately colored resin as the resin material used in the injection molding, the unevenness of the member main body and the cured product that has been tightly integrated with the cured material can be used to decorate the unevenness of the unevenness with a clear outline. Can be applied. Thereby, a delicate decorative portion having a high design effect can be formed according to the form of the uneven portion.

Further, by selecting a resin material used for injection molding, the ear hook portion and the pad can be formed softly, and the fit property of the eyeglasses can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a front frame member manufactured according to the present invention.

FIG. 2 is a front view showing a temple manufactured according to the present invention.

FIG. 3 is a front view showing a member main body for manufacturing a front frame member.

FIG. 4 is a front view showing a member main body for manufacturing a temple.

FIG. 5 is a cross-sectional view showing a state in which a member main body is housed in a mold.

FIG. 6 is a cross-sectional view showing a pad manufactured according to the present invention.

FIG. 7 is a cross-sectional view showing a member main body used for manufacturing a pad.

FIG. 8 is a cross-sectional view showing a modern manufactured by the present invention.

FIG. 9 is a sectional view showing a member main body used for manufacturing a modern.

FIG. 10 is a perspective view showing a conventional resin-coated temple.

FIG. 11 is a perspective view showing another example of a conventional resin-coated temple.

FIG. 12 is a partial front view showing another example of the conventional resin-coated temple.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front frame member 2 Temple 3 Member main body 5 Member main body 6 Lens holding frame 7 Bridge 9 Pad 10 Temple connection part 16 Groove part 17 Irregularity part 18 Ear hook part 21 Decorative through hole 22 Cured product 23 Die 29 Member main body 31 Member main body

Claims (11)

[Claims] 1. A manufacturing method for manufacturing a resin-made eyeglass member, wherein after manufacturing a resin-made member main body having an uneven portion formed at an edge portion, at least the uneven portion of the member main body is formed. The part is housed in a closed mold, and then a molten resin material having a melting temperature lower than the heat resistant temperature of the resin constituting the member body is injected into the mold,
A method for producing a spectacle member made of resin, wherein a cured product of the resin material is integrated with the concave-convex portion in a close contact state. 2. The method according to claim 1, wherein the member body is formed by cutting a sheet member made of a hard resin. 3. The method for manufacturing a spectacle member made of resin according to claim 1, wherein the concave-convex portion has a concave portion formed in an edge portion of the member main body. 4. The member body has an edge portion formed with a concave and convex portion which is open at both ends continuous in the thickness direction of the member body and has a groove extending inside the member body.
At least a portion of the member main body where the concave and convex portions are formed is accommodated in a closed mold, and thereafter, a resin material in a molten state having a melting temperature lower than the heat resistant temperature of the resin constituting the member main body is molded. 3. The resin according to claim 1, wherein the resin material is injected into the groove, the injected resin material is allowed to flow into the groove portion, and a cured product of the resin material is integrated with the uneven portion in a close contact state. 4. A method for manufacturing an eyeglass member. 5. A manufacturing method for manufacturing a spectacle member as a front frame member made of a resin, wherein a member main body used for manufacturing the front frame member connects left and right lens holding frames by a bridge and forms both lenses. A pad is protruded on the rear surface side of the inner portion of the holding frame, and a temple connecting portion is continuously provided on the outer portions of the left and right lens holding frames. The frame and the bridge are manufactured by cutting a sheet-shaped member made of a hard resin, and the member main body is provided at both upper and lower edges of the temple connecting portion at both ends continuous in the thickness direction of the member main body. It is assumed that an uneven portion having a groove extending in the interior of the member body is formed, and the portion of the member body having the above configuration, in which the uneven portion is formed, is accommodated in a closed mold, Then, the member body A molten resin material having a melting temperature lower than the heat-resistant temperature of the resin constituting the resin is injected into a mold, and a cured product of the resin material is allowed to flow into the groove portion in a tight manner so that a cured product of the resin material is removed. Shall be integrated in a tight contact with the uneven portion,
A method of manufacturing a resin-made eyeglass member, wherein the upper and lower edge portions and the outer edge portion of the temple connecting portion are successively covered with a cured product of the resin material by this injection molding. . 6. An upper and / or lower edge portion of a bridge having a concave / convex portion having both ends continuous in the thickness direction of the member main body and having a groove extending inside the member main body. Then, the portion where the uneven portion is formed is housed in a closed mold, and thereafter, a molten resin material having a melting temperature lower than the heat resistant temperature of the resin constituting the member main body is placed in the mold. 6. The method for manufacturing a resin-made eyeglass member according to claim 5, wherein the resin material is injected, and a cured product of the resin material is integrated with the concave-convex portion in a close contact state. 7. A concave / convex portion, which is open at both ends continuous in the thickness direction of the member main body and has a groove extending inside the member main body, is provided on a rear edge portion of the pad on the side in contact with the nose bridge surface. It is assumed that the resin material in the molten state having a melting temperature lower than the heat-resistant temperature of the resin constituting the member main body is housed in a closed mold, and the portion where the uneven portion is formed is then housed in a closed mold. The method for manufacturing a resin-made eyeglass member according to claim 5, wherein the resin material is injected into a mold, and a cured product of the resin material is integrated with the concave and convex portion in a tight contact state. 8. A manufacturing method for manufacturing an eyeglass member as a temple made of resin, wherein a member main body used for manufacturing the temple has an ear hook portion on a rear end side, and is entirely made of hard resin. It is manufactured by cutting the sheet-shaped member of the above, and in the member main body, the upper and lower edge portions of the ear hook portion are open at both ends continuous in the thickness direction of the member main body, and are formed inside the member main body. It is assumed that an uneven portion having an extending groove portion is formed, and the portion of the member main body having the above configuration, in which the uneven portion is formed, is accommodated in a closed mold, and thereafter, the resin forming the member main body is formed. A molten resin material having a melting temperature lower than the heat-resistant temperature is injected into a mold, and a cured product of the resin material is allowed to flow into the groove portion so that the cured product of the resin material adheres to the uneven portion. Shall be integrated into the state,
A method for manufacturing a resin-made eyeglass member, wherein the upper and lower edge portions and the outer edge portion of the ear hook portion are covered with a cured product of the resin material in series by this injection molding. . 9. A concave / convex portion which is open at both ends continuous in the thickness direction of the member main body and has a groove extending inside the member main body is formed at upper and lower edge portions at a front end side portion of the member main body. The member body having the above configuration,
The part where the uneven part is formed is housed in a closed mold,
Thereafter, a molten resin material having a melting temperature lower than the heat resistance temperature of the resin constituting the member main body is injected into a mold, and a cured product of the resin material is allowed to flow into the groove portion in a tight manner, thereby forming the resin. The cured product of the material is to be integrated with the uneven portion in a tight contact state, and by this injection molding, the upper and lower edge portions and the outer edge portion of the front end portion are successively formed.
9. The method according to claim 8, wherein the resin material is covered with a cured product of the resin material. 10. The sheet member made of hard resin is made of acetate.
10. The method for producing a resin eyeglass member according to 8 or 9. 11. The member main body has a decorative through hole and / or a decorative recess penetrating therethrough, and a molten resin injected into a closed mold is injected into the decorative through hole and the decorative recess. The method for manufacturing a resin eyeglass member according to any one of claims 1 to 10, further comprising filling.